Kind of new to knitting and need a little help

hello everyone im fairly new to knitting but so far ive been doing ok i have been able to follow some patterns pritty flawlessly untill i came across one pattern where it said :work 4 rows even: :oo: this hit me like a brick wall :wall:cause i have nooo idea what to do :shrug:ive tried looking it up online numerous times with no luck … so if some one can please help me out that would be awsome
:mrgreen: thanks alot

ash

It means work 4 works without increasing or decreasing any stitches.